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Creator
- United States. War Department 29
- United States. Army. Corps of Engineers 15
- Powell, Charles Francis, 1843-1907 5
- United States. Agricultural Stabilization and Conservation Service 5
- Smith, Katherine Louise 4
- United States. Army Map Service 3
- United States. Army. Office of the Chief of Engineers 3
- United States. Commodity Stabilization Service 3
- United States. Forest Service 3
- EROS Data Center 2
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Topic
- Bodies of water 149
- Rivers 134
- Northwest, Pacific 131
- Photography 71
- Riparian areas 39
- Aerial photographs 38
- River engineering 34
- United States. Congress--Records and correspondence 31
- River surveys 29
- Mountains 28
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Region
- Oregon >> United States 149
- Columbia River >> Clatsop County >> Oregon >> United States 69
- Washington >> United States 69
- Columbia River >> Douglas County >> Washington >> United States 67
- Willamette River >> Multnomah County >> Oregon >> United States 37
- Snake River >> Franklin County >> Washington >> United States 25
- California >> United States 13
- Coos Bay >> Coos County >> Oregon >> United States 12
- Idaho >> United States 10
- San Francisco Bay >> San Mateo County >> California >> United States 7
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Rights
- No Copyright - United States 149
Type
- Image 98
- Text 47
- Collection 4
Format
- image/tiff 56
- image/jpeg 50
- application/pdf 39
- application/xml 4